View CM1117GSCN252_4638979.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The CM1117 series of adjustable and fixed voltage regulators are designed to provide 1A for applications requiring high efficiency. All internal circuitry is designed to operated down to 1V input to output differential and the dropout voltage is fully specified as a function of load current. The CM1117 offers current limiting and thermal protection. The on chip trimming adjusts the reference voltage accuracy to 1%.
FEATURES
Three Terminal Adjustable or Fixed Voltages: 1.8V, 2.5V, 3.3V, and adjustable. Output Current of 1A Low dropout voltage: 1V Typ. Line Regulation: 0.2% Max Load Regulation: 0.4% Max Fast Transient Response Thermal Protection SOT-223 and TO-252 package available
APPLICATIONS
High Efficiency Linear Regulators Post Regulators for Switching Supplies Battery Chargers Active SCSI Terminators Post Regulator for Switching DC/DC Converter Battery Powered Instrumentation
PIN CONFIGURATION
TO-252 Front View
VIN VO UT G ND/ADJ 3
VOUT 2
SOT-223 Top View
2 1
GND/ADJ
1
ORDERING INFORMATION
Package Type TO-252 CM1117DCN252 CM1117KCN252 CM1117SCN252 CM1117CN252 CM1117GDCN252* CM1117GKCN252* CM1117GSCN252* CM1117GCN252* SOT-223 CM1117DCM223 CM1117KCM223 CM1117SCM223 CM1117CM223 CM1117GDCM223* CM1117GKCM223* CM1117GSCM223* CM1117GCM223* Operating Temperature Range (TA) 0 ~ +125 0 ~ +125 0 ~ +125 0 ~ +125 0 ~ +125 0 ~ +125 0 ~ +125 0 ~ +125 Output Voltage 1.8V 2.5V 3.3V ADJ. 1.8V 2.5V 3.3V ADJ.
*Note: G : Suffix for Pb Free Product
2007/05/02 Rev1.9
Champion Microelectronic Corporation
VIN 3
Page 1
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
ABSOLUTE MAXIMUM RATINGS
Input Voltage ........................................................................... +18V ..................... 0 to +125 Operating Junction Temperature Range, TJ
Storage Temperature .................................................. -65 to +150 Lead Temperature (10 sec.) ......................................................... 260
THERMAL INFORMATION
Parameter Thermal Resistance (jc) Thermal Resistance (ja) Internal Power Dissipation (PD) (T = 100, No Heatsink) Maximum Junction Temperature Maximum Lead Temperature (10 Sec) SOT-223 TO-252 SOT-223 TO-252 SOT-223 TO-252 Maximum 15 50 136 80 900 1500 150 300 Unit /W /W mW
BLOCK DIAGRAM
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 2
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IOUT = 10mA, and TJ = +25; unless otherwise noted Symbol VREF Parameter Reference Voltage Conditions CM1117-ADJ IOUT=10mA, VIN-VOUT=2V, TJ=25 10mAIOUT1A, 1.4VVIN-VOUT10V CM1117 -1.8 IOUT=10mA, VIN=3.8V, TJ=25 0IOUT1A, 3.2VVIN-VOUT10V CM1117 -2.5 IOUT=10mA, VIN=4.5V, TJ=25 0IOUT1A, 3.9VVIN-VOUT10V CM1117 -3.3 IOUT=10mA, VIN=5V, TJ=25 0IOUT1A, 4.75VVIN-VOUT10V CM1117 -ADJ IOUT=10mA, 1.5VVIN-VOUT13.75V CM1117 -1.8 IOUT=0mA, 3.2VVIN10V CM1117 -2.5 IOUT=0mA, 3.9VVIN10V CM1117 -3.3 IOUT=0mA, 4.75VVIN10V CM1117 -ADJ VIN-VOUT=3V, 10mAIOUT1A CM1117 -1.8 VIN=3.2V, 0IOUT1A CM1117 -2.5 VIN=3.9V, 0IOUT1A CM1117 -3.3 VIN =4.75V, 0IOUT1A IOUT =100mA IOUT =500mA IOUT =1A (TO-252) VIN-VOUT=5V, TJ=25 CM1117 -ADJ VIN=15V CM1117 -1.8, VIN15V CM1117 -2.5, VIN15V CM1117 -3.3, VIN15V TA=25, 30ms Pulse fRIPPLE=120Hz, VIN-VOUT=3V VRIPPLE=1VPP 10mAIOUT1A 1.4VVIN-VOUT10V TA=125, 1000Hrs (% of VOUT), 10Hzf10kHz 3-Lead SOT-223 3-Lead TO-252 3-Lead SOT-223 3-Lead TO-252 (Note 6) Min (Note 2) 1.238 Typ (Note 1) 1.250 Max (Note 2) 1.262 Units V
VOUT
Output Voltage
1.764
1.8
1.836
V
2.45
2.500
2.55
V
3.234
3.300 0.035 1 1 1 0.2 1 1 1 1.10 1.15 1.20 1200 1.7 5 5 5 0.01
3.366 0.2 6 6 6 0.4 10 10 10 1.20 1.25 1.30 1500 5 10 10 10 0.1
V % mV mV mV % mV mV mV V V V mA mA mA mA mA %/W dB
VOUT
Line Regulation (Note 3)
VOUT
Load Regulation (Note 3)
VIN-VOUT ILIMIT
Dropout Voltage (Note 4) Current Limit Minimum Load Current (Note 5) Quiescent Current
1000
Thermal Regulation Ripple Regulation Adjust Pin Current Adjust Pin Current Change Temperature Stability Long Term Stability RMS Output Noise Thermal Resistance Junction-to-Case Thermal Resistance Junction-to-Ambient (No heat sink; No air flow)
60
75 60 0.2 0.5 0.3 0.003 15.0 3.0 10 136 79 92 120 5
A A % % % /W /W /W /W /W /W
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 3
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
Note 1: Typical Values represent the most likely parametric norm. Note 2: All limits are guaranteed by testing or statistical analysis. Note 3: Load and line regulation are measured at constant junction room temperature. Note 4: The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input voltage. It is measured when the output voltage has dropped 100mV from the nominal value obtained at VIN = VOUT +1.5V. Note 5: The minimum output current required to maintain regulation. Note 6: Minimum pad size of 0.038in2
Application Hints
Like any linear voltage regulator, CM1117 requires external capacitors to ensure stability. The external capacitors must be carefully selected to ensure performance.
Thermal Considerations
It is important that the thermal limit of the package is not exceeded. The CM1117 has built-in thermal protection. When the thermal limit is exceeded, the IC will enter protection, and VOUT will be pulled to ground. The power dissipation for a given application can be calculated as following: The power dissipation (PD) is PD = IOUT * [VIN - VOUT]
Input Capacitor
An input capacitor of at least 10F is required. Ceramic or Tantalum can be used. The value can be increase without upper limit.
Output Capacitor
An output capacitor is required for stability. It must be placed no more than 1 cm away from the VOUT pin, and connected directly between VOUT and GND pins. The minimum value is 22F but may be increase without limit.
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 4
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
APPLICATION CIRCUIT
Adjustable Regulator VOUT = 1.25V (1+R2/R1)
5V Regulator with Shutdown
Fixed Voltage Regulator
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 5
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
PACKAGE DIMENSION
SOT-223 (M223)
D B1 A
E
L1
H
e e1
8
A B B1 D E e e1 H L L1
B
B
TO-252 (N252)
Y B R C E X L2 L1 K S D G J H
L
2007/05/02 Rev1.9
Champion Microelectronic Corporation
A
L
Page 6
CM1117
1A LOW DROPOUT VOLTAGE REGULATOR
IMPORTANT NOTICE
Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards.
HsinChu Headquarter
5F, No. 11, Park Avenue II, Science-Based Industrial Park, HsinChu City, Taiwan T E L : +886-3-567 9979 F A X : +886-3-567 9909
Sales & Marketing
7F-6, No.32, Sec. 1, Chenggong Rd., Nangang District, Taipei City 115, Taiwan T E L : +886-2-2788 0558 F A X : +886-2-2788 2985
2007/05/02 Rev1.9
Champion Microelectronic Corporation
Page 7

▲Up To Search▲

Price & Availability of CM1117GSCN252

	To Download CM1117GSCN252 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .